摘要
Gauss模型的自旋可以连续取值,因此,研究该模型的相变对于更好地理解铁磁体的临界性质具有十分重要的意义。本文应用实空间重整化群的方法,研究了一种等级晶格上推广的Gauss模型的相变和临界性质,求出了系统的临界点K=b33。根据RG变换理论,求得系统比热临界指数和关联长度的临界指数分别为容上的电荷清除掉,如图2(c)所示。α=0.758和v=0.414。
Gauss mode is allowed to take a continuous spin value, so the study of Gauss mode is of great value to understand better the critical properties of ferromagnets. In this paper, using the renormalization- group transformation technique, the phase transition and critical properties of the modified Gauss model on a type of hierarchical lattice are bz studied, and its fixed points is K = b3/3 obtained. In terms of the RG transformation and scaling theory, critical exponents a = 0. 758 and v = 0. 414 are obtained.
出处
《安庆师范学院学报（自然科学版）》
2008年第2期31-32,共2页
Journal of Anqing Teachers College(Natural Science Edition)
基金
安庆师范学院科研启动基金资助(K05000000090)
关键词
等级晶格
GAUSS模型
重整化群
临界性质
hierarchical lattice
Gauss model
renormalization group
critical properties
